Energy & Work

Work done =

• $F\times d$

• Fm

• $\frac{F}{d}$

• FG

The S.I. unit of work is:

• Dyne

• Joule

• Newton

• Watt

Energy is a _____________.

• vector quantity

• scalar quantity

• unit quantity

• free quantity

Work can be _____________.

• positive only

• negative only

• either positive or negative

• neither positive nor negative

The work done by a body is the product of force and

• distance.

• displacement.

• speed.

• velocity.

The capacity to do work is called ___________.

• acceleration

• power

• energy

• pressure

Tags

NGSS.MS-PS3-5

30 Joules work is done when a force “F” causes a displacement of 5m. The magnitude of force is _____________.

• 6 Pascal

• 6 newton

• 6 N-m

• 150 N-m

The energy stored in a car battery is

• only electrical energy.

• only chemical energy.

• both a) & b).

• kinetic energy.

Work is said to be done when

• force acts upon a body, but the body does not move.

• force acts upon a body and moves it in the direction of force.

• force acts upon a body but the body moves in perpendicular direction of force.

• none of these.

Tags

NGSS.HS-PS2-1

When force acts in opposite direction to the displacement of the body, the work done is ___________.

• positive

• negative

• zero

• infinity